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Question 331800: will you show me how to work these problems out ?
Please , amd thank you ( :
Solve by graphing.
1. y=x-1
y=-x+7
2. y=4x+7
y=-3x
3. y=-3x-4
3x+y=4
4. y=-x+2
3x+3y=12
5. y=4x-3
y=-3x-3
6. y=3x+2
2x+y=-8
7. x+y=2
y=-2x-1
8. 3x-6y=12
2x-4y=8
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Solve by graphing.
1. y=x-1
y=-x+7
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These are linear eqns, so they're straight lines.
Find 2 points for each eqn, then draw a line thru them.
eg, y = x-1
Pick 2 values for y and find x
x=0, y=-1 --> (0,-1) point 1
x=5, y=4 --> (5,4) point 2
Plot the 2 points, draw a line thru them.
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Do the same for the other equation.
Where they intersect is the solution to the system.
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